Record discharge mechanism



June 27, 1944. F. J. OFFEN 2,352,560

RE\CORD DISCHARGE MECHANISM Filed Aug. 4. 1942 2 srkeets-shee; 1"

z 2: z INVENTOR. BY 1 4' Y 5 ATTORNEY June 27, 1944. F. J. QFFEN RECORD QISCHARGE MECHANISM Filed Aug. 4, 194g 2 Sheets-Sheet 2 mmvrok.

ATTORNEY Patented June 27, 1944 RECORD DISCHARGE MECHANISM Francis John Oilen, Swindon, England, assignor to Garrard Engineering & Manufacturing Company, Limited, Swindon, England, a corporation of Great Britain Application August '4, 1942, Serial No. 453,593

9 Claims. v(cl. 274-10) This invention relates to mechanisms for effecting the automatic delivery of disc records,

one 'at a -time, from a storage position to the turntable'oi a gramophone or similar sound-reproducing machine, such as is shown and describedin my co-pending application, Serial No.

392,200, flied May 13, 19 41 im-Magazinephonoundersurface of a record adjacent its edge, vertically movable opp sitely located supports spaced outwardly of the periphery of the turntable, which, when raised, receive each record as it isreleased, to lower it onto the turntable, and a swinging arm serving, in conjunction withone 0! the sets; or alternately laterally displaceable graphs, issued as Patent No. 2,297,014, dated September 29, 1942, 0! which this application is a continuation in part.

- In my aforesaid application, I have described a record delivery mechanism comprising a series of vertically spaced vanes located in juxtaposition to the periphery of the records, forindividual engagement with the undersurface of the marginal,

portions thereof, which are adapted to coact with other and relatively spaced supporting means for retaining the records in stacked condition above the turntable, for delivery thereto in response to the lateral displacement of th respective vanes, in sequence, for the delivery of the lowermost tion by the conjoint vertical displacement of the vanes in engagement therewith.

The principal object of the present invention;-

is to provide an automatic record delivery mechanism of a type which may meet such requirements as may negative the use of the independently displaceable vane mechanism of my, said livered, the,whole being cooperatively associated vanes,'to support the stack of records to be dewith actuating mechanism becoming effective automatically to release each record in the lowermost position in turn. The release of the lowermost record is accomplished in a series of corelated movements of the sets of vanes, the verticaliy movable supports and the swingable arm,-

in which the stacked records supported by-one set of vanes and one of saidsupports are engaged by the other set of vanes in a concurrent I lateral displacement of the 'flrst set of vanes from record-engaging position. the records of the stack with the exception of the lowermost record to the turntable, the remaining records; of the stack being lowered to pre-delivery posione thereof, being re-engaged by the first set of vanes, in a synchronized displacement of the second set from record-engaging position, with the other of saidvertically movable supports rising beneath and engaging with the vane-released record, the swinging arm moving into position beneath thelowermostrecord oi the stack to co-pending application, th present invention contemplating the utilization of two sets of conjointly laterally displaceable. vanes alternately functioning to engine the stacked records to lower the stack to a pre-delivery position and to eflect the "release of lowermost record for disposition uponthe turntable.

' A further object of this invention 18 to provide a mechanism comprising twosets of alternately operating vanes, functioning as aforesaid, in conjunction with other record supporting ."and delivery means, such, ior'example, as described in my said co-pending application, which willbe capable of supporting and delivering records of different diameters, intermixed in any arrange- -ment in the stack or pile.

Briefly, the present invention consists oi mechanism for automatically -delivering disc records,

one at a time, from the bottom of a stack of records oi diner-enter like sizes or diameters, 'sul ported above the turntable of a gramophone or similar machine, which'comprises a plurality of sets of vanes alternately engageable with the records oi the stack, each vane nmctioning as 811%;-

dividual record-support in engagement with e supp rtthe load thereof, during the transfer of the record carried by the two supports tothe turntable.

Other objects and advantages flowing from the practicing of my invention will become man-- iiest as the description of the, preferred embodiments thereof shown in the accompanying drawin s proceedait being, understood that my in vention 'may take other forms within the spirit and scope of this disclosure.

In the drawings: I Figure 1 is a' view in perspective, partly broken away, showing a record delivery mechanism or a preferred form, conforming to my invention, and the manner in which it may be applied to a gram- -ophone. l

Figure 2 is a top plan view of the'structureshowninFisulel: r Figure 3 is a side elevation of the construction .of the preceding figures, illustrative of a slightly modified arrangementof record-engaging vanes, and l I Figure 4 is a front elevation of the record elevatoroi Figure l, which cooperates with the vanes in supporting the lowermost vane-engaged rec-,-

0rd in its-transfer to the turntable.

Referring now to thedrawings in detail in which like characters of reference are employed to designate similar parts in the several views,

the stack in alined engagement therewith, as

- hereinafter will become evident, while, when the the records, generally indicated at r, which may be of mixed sizes of diameters are alternately supported above the turntable I by two sets of vanes located on opposite sides ofcthe center line of a record, each set being laterally movable in alternation with the other set,into and out of synchronized that the lowermost record of the stack is released for transfer to the turntable and the remaining records in the stack simultaneously lowered or moved downwardly to locate the bottom one thereof, in position for subsequent release, the records, of course, being released one at a time in appropriately timedrelation.

The records are released, one at a time, as stated, onto 'a pair of vertically movable supports 8 and '9, located diametrically opposite, in outwardly spaced relation to the periphery of the said turntable I, the support 8 being adapted to cooperate with the two sets of vanes in supporting the stack. of records in themanner hereinafter explained. Forthis reason, the support 8 rises to a higherlevel than the opposite vertically movable support 9 and since, in the, transfer of a record to the turntable, the two supports complete their downward movement in unison, the lowering of the support 8 willcommence first, the downward movement thereof continuing until it reaches the level of the support 9, when both move in unison as pointed out; Therefore, the two supports are independently actuated, the raising and lowering of the support 8 being effected by a toothed quadrant it which is in engagement with a rack H formed on the lower portion of the rod 12 which carries said support 8 'and is mounted for'vertlcal reciprocation in the bearing [3 on the motor-board m.

Theraising and lowering of the support 9 is effected by a cam groove'H, formed in one face of the cam l5, rigid with the' shaft I50, through the medium of a rocking lever 19 which is pivptally mounted on a bracket l1, as at I9, de-.

pendent from the underside of said motor-board,

the lever carrying a cam follower l9 which traverses said cam groove. The opposite end of this lever I9 is connected to the lower end of the rod 20 carrying the support 9 and vertically reciprocable inthe bearing H on said motor-board m.

records are engaged by the vanes 22 of the opposite set, the records will be supported in a level position, with the lowermost one of the stack bearing upon the horizontal surface 9a of said support, the vanesof the respective sets being in the same horizontal plane and equidistantly spaced, as is clearly shown in Figure 1 of the drawings.

For the purposes of this description,- the set of vanes 22, whereby therecords are disposed in a level position, in association with the horizontal surface -8a-of the support 8, will be termed the left-hand" set, while the other set of vanes 29, by means'of which the records are supported in inclined association with the surface 92) of said support, will be referred toas the righ hand set.

Now, assuming that the records are supported by the left-hand set of vanes 22 and the coop erating surface 9a of the support 8, the inward During the rotation of the cam IS, the lever i6 is rocked. about-its pivot to raise and lower the support-9, the movement of this cam being synchronized with the movement of the aforesaid quadrant iii, in order that the two supports may operate in unison during a part of their like directional movement.

In the form of the invention shown in Figures 1, 2 and 4, the vanes in each set, which are indicated by the reference numerals 22 and 23, are

- relatively spaced to permit the opposing edge of a record to enter therebetween and to allow the upon the opposite vertically movable support 9,

the lowermost record, normally, being in engagement with the lowermost of the vanes 22 and said support 9. Preferably, the upper face of said support I is conformed to provide a horizontal record-engaging surface as at to: and

' Y engaged records to incline downwardlyto'abut movement of the right-hand set'of vanes 29 will cause ,the same to engage beneath, the corresponding records, i. e., the lowest vane will engage under the bottom record and so on throughout the series. The left-hand vanes 22 then move outwardly and clear of the records, the records tilting in the direction of the inclined surface of the support 9b, on which the bottom record abuts, or in other words, tothe left. The left-hand vanes now move inwardly again and owing to the inclination of the records, the lowest vane of the set will engage beneath the second lowest record, thus leaving the lowermost record supported only by the lowest vane of the right-hand set 23. In the succeeding outward movement of the right-hand set ofvanes 23. the record is released from the lowest vane thereof to drop on to the vertically movable support 9' in juxtaposition to the vanes in readiness for lowering. to the turntable, while the remaining records, engaged by the left-hand set of vanes, assume a level attitude.

These operations, of course, are repeated in the same sequence, until all of the records in the stack have been released.

As each released record becomes solely supported by the oppositely positioned vertically movable supports 8 and 9, these supports become operative to lower the record into position upon the turntable I, by the functioning of their actuating mechanism, as heretofore described.

As the lowering of the supports 8 and 9 in the transfer of r a record to the turntable would otherwise leave the vane-engaged stack of records unsupported, I provide a swinging arm 24 which of the lowermost record from the bottom there-,

of, so that the load of the remaining records is taken by said arm, [as the vertically movable supports function as the sole supporting means 'for thereleasedrecord, while the outward movement of said arm occurs immediately the weight 1 of the records inengagement with the. vanes is supported'thereby and the cooperating support 9, as the latteris returned to its zenith position.

the motor driven mechanismof the machine.

' Each set ofv'anes-fl and, is fixed to a vertical column 29 mounted for rotative movement in a suitable bearing 21, each column carrying a collar 29 adjustable longitudinally thereof and and insuring conjoint movement of the vanes and their supporting columns.

Any suitable actuating mechanism for produc: ing the requisite alternating movements of the two sets of vanes in appropriately timed relation to I the cooperating record supporting media, may be employed. For example, the column 26' which supports the vanes 22 for conjoint rotative move.- ment nay be provided with a pinion 33, keyed thereto, in engagement with a rack 34 pivotally connected to one end of a bell-crank lever 35,

rockably mounted on a shaft 38 and carrying a cam follower 31, interposed in the path of rotation of the aforementioned cam ii, for engagement by the efiective surface |a on the periphery thereof, to rock said lever on its fulcrum and actuate the rack in one directionto rotate the vanes 22 out be lowered a distance equal to half the vane spacing in each outward movement of the lower set of vanes. Therefore, it will be obvious that with this vane arrangement, they may be mounted on separate and independent columns 26, asshown,

or the two sets may b constructed as a unit and mounted upon a common or single column. As in the construction of Figures 1 and 2, the alter nate movements of thevanes are repeated until of record-engaging position, the reverse directional movement of said lever, under the influence of the spring 38 connected thereto and to an oppositelylocated fixed support, serving to return the vanes to record-engaging position, or vice 'versa,as may be deemed desirable in designing the .mechanism. The alternate operation of the vanes 23 is likewise effected through the mediumof .the rack 34a in mesh with the pinion 33a rigid with the column 26 on which the vanes 23 are fixed, the rack 34a having a pivotal connection with the. bell-crank lever 35a rockably mounted on the aforesaid shaft 36, on end of said lever being disposed in the path of rotation of thecam lib for engagement by the eifective surface l5d conjunction with the cooperating raised vertically all of the records have in turn been released.

To maintain the records in peripheral registration while in superimposed position in the stack or pile and during the release of the lowermost record, a pin or rod H is provided. This pin or rod may be dependent froma suitable support 42 overhanging the turntable, as showninFigure 1, in alinement with the locating pin la on the latter, the length of said rod being such-as to provide for the accommodation of all of the. records of the stack andto permit it to function in accurately guiding the released record into Position upon the supports whereby it is transferred to the turntable. Preferably, the pin is loosely fitted in the overhanging support 42 so that it may be readily raisedby hand, to facilitate locating. the

records in. stack formation in engagement with the vanes whereby they are initially supported in movable support 8., In lieu of the guide pin 4 I, the center pin of the turntable, in certain reproducing machines, may be of a length to enter the center apertures of the recordsengaged' with thevanes to retain them in assembled position and guide .the lowermost as it is released in its movement thereof, to rock said lever 35a and actuate the rack 34min engagement with the pinion 33a to impart rotative movement to said vanes 23 in 6pposition to the spring 38a; Obviously, the lever 35a is rocked in the reverse direction under the influence of the spring 38a as the cam surface lib becomes non-efiectiv'e relative to said lever, resulting'in the opposite rotative movement of the vanes 23, the spring 384; being connectedto the lever 35a and a suitable fixed support in the manner of the spring 38 of the actuating means for vanes 22. As'will be. noted, from Figure l, the cam lib, similarly to the cam I5, is "rigid with the shaft 150 so that during the revolution of the shaft I both cams revolve, the alternate positive and, in Figure 3, the respective vanes 39 and M f or cam actuation of the respective sets of vanes being obtained by the diametrically opposite disposition of'the efiective surface I 5d of the cam l5b relative to the corresponding surfaces I5a of the cm IS, the shaft. I50 being driven from the motor of the phonograph (not shown) or other medium, in any appropriate arrangement of mechanism.

In'the modified vane construction of Figure 3,

the vanes 39 of one set are fixed at such height;

relatively to the vanes 40 of the second set, that the formerlare displaced vertically in'relation to the said vanes 40, a distance equivalent to half the space between th vanes of each set, while the co-supportingsurfaceof'the vertically movable support 8 is horizontal. With this arrangement, the records, at all times, are maintained in level disposition, but owing to the difierence in height between the opposed vanes, the records will ing surface, as heretofore indicated.

to position inassociation shown at 43' in Figure 3.

In both embodiments illustrated, provision is made for the operation of my record discharge mechanism with 10" records or 12" records, with all of the records in a stack being. of the same with the turntable, as

diameter or of different diameters, the records being released to the 'tumtable by the alternate actuation of the two sets of vanes 22 and 23, as,

described inconjunction with Y the cooperating support afforded by the elevator 8, which, as set forth in Figures'l and 2, embodies surfaces 8a and 8b for alternately maintaining the record in proc- 2 es of being discharged in-a level position or parallel to the turntable and inclined at an angle thereto, for its transfer to th turntable, as it is released by the lowermost vane of the right hand .-set 23 to be supported by the oppositelylocated elevators 8 and 9- and lowered to the turntable;

are at different levels andthe elevator 3 is horizontal throughout the length of its record-engag- To provide for the support of the record in process of discharge, whetherit is of the larger or.

smaller diameter, the elevator 3, as herein shown, embodies two laterally spaced upstanding flanges 44 and 45, the inner flange .45 being located for engagement by a ten in'ch record just inwardly'of its periphery, while the outerlfiange E3 is engageable by a twelve inch record in a similar manner. Each of these flanges, as heretofore pointed out and as shown'in the drawings. especially in Figure 4, embodies a straight surface to tocooperate with the lowerrnostof the vanes 22 to support the record abuttingthereon parallel to the turntable and an. inclined surface 8b which cooperates with the lowest of the vanes 23 for tiltingly supporting the record engaged therewith, in the manner heretoforeldescribed, the outer flange 44 being higher than the inner flange 45, I so that a twelveinch record abutting on either of its surfaces, In, ID, in Figures 1 and 2, or I, in

Figure 3, will clear the corresponding. surface of the inner flange. manifestly, in Figures 1 and 2, the mode of operation isthe same whether the record being discharged is of the smaller or larger diameter, the record when finally released to the two elevators I and I shifting from its tilted ens gagement with the surface Ib of the elevator I to a pontion parallelto the turntable, as it is engaged from beneath by the elevator I, the entire supporting surface of which is parallel to the straight surface Ia of the opposite elevator.

Although in the drawings a raised portion ea is shown as being provided on the supports I, such portion which may be of some soft material serves surface of the'vertically movable support, whereno other purpose than that of a fulcrum to facilitate the turning movement of the record as the support I is being moved relatively to the nu port I. l

may be used either alone, in which case it will be necessary to impart a secondary 'and outward movement to the vertically movable supports to enable the same to rise clear of the records on V the turntable, or in connection with record changing and reversing mechanism; For example, it is particularly applicable for-use in conjunction with record changing mechanism of the kind described in Patent Number 2,1883% involving a swinging arm which operates to en'- gage each delivered record by its central hole, remove the same from the turntable, reverse it, return it again for playing the reverse side and finally again remove it, when played for rejection. l e

, It is obvious that various changes iiiid nwdlfications may be made to the details of constructien without departing from the general spirit anlsm according to the present invention horizontal and inclined surfaces for supportingat the diametrically opposite marginal zone of the lowermostrecord all the records supported.

by one or the other of the sets of vanes at a horizontal or inclined plane, means for alternately oscillating said two sets of vanes into and out of record-supporting position to transfer the-support of the records from one set of vanes and the horizontal surface of the vertically movable support to the other set of vanes and the inclined by the lowermost record is tiltedbelow the level of the lowermost vane of the first setpf vanes.

3. Mechanism for supporting and delivering disc records of different diameters in succession to the turntableof a phonograph comprising two laterally spaced sets of vanes osclllatably mount- 7 ed outward of'the periphery of the turntable for engaging the records in alternation, the vanes of each set being vertically spaced for extending beneath and-supporting a plurality of records at their marginal zones, a-vertically movable support located outwardly of the periphery of the turntable opposite said sets of vanes and having horizontal and-inclined surfaces for supporting atthe diametrically opposite marginal zoneof the lowermost record all the records supported by one or the other of the sets of vanes at a horizontal or inclined plane, means for alter nately oscillating said two sets of vanes into and out of record-supporting position to transfer the support of the records from one set of vanes and the horizontal surface of the vertically movable support to the other set of vanes and theinclined surface of the vertically movable support, whereby the lowermost record is tilted below the level -of the lowermost vane of the first-set of vanes.

of the invention as set forth in the appendedclaims,

I claim:

1. Mechanism for supporting and deiivering disc records or different diameters in successionto the turntable of a phonographcomprising two sets of vanes oscillatably mounted outward of the periphery of the turntable for engaging the ,-oscillating said two sets of vanes into and out of record-supporting position to transfer the supand means horizontally movable between the tilted lowermost record and the remaining records to supportingly engage from beneath said remaining records marginally supported'by' said second set of vanes, and means for loweringthe vertically movable supportto permit thetilted lowermost record marginally supportedthereon. to drop by gravity towards the turntable.

4. Mechanism for supporting and delivering disc records of different diameters in succession to the turntable of a phonograph comprising two laterally spaced sets of vanes oscillatably mounted outward of the periphery of the turntable for engaging the records in alternation, the vanes of each set being vertically spaced for extending beneath and supporting a plurality of records at port of the records from one set of vanes and the 1 horizontal surface of the vertically movable support to the other set of vanes and the inclined surface of the vertically movable support, whereby the lowermost record is tilted below the level of the lowermost'vane ofth'e first set of vanes.

2. l /Iech'anism for supporting and delivering disc records of different diameters in succession to the turntable of a phonograph comprising two laterally spaced sets of vanes oscillatably mount-- 1 ed outward of the periphery of the turntable for engaging the records in alternation, the vanes of each set being vertically spaced for extending beneath and supporting a plurality'of records at their marginal zones, a vertically movable support located outwardly of the periphery of the turntable opposite said sets of vanes and having their marginal zones, a vertically movable support located outwardly of the periphery of ,the

turntable opposite said sets of vanes and havinghorizontal and inclinedsurfaces for supporting at the diametrically opposite marginal zone of the lowermost record all the reoords supported by one or the other of the sets of vanes at a horizontal or inclined plane, means for alternately oscillating said two sets of vanes into and out of record-supporting position to transfer the support of the records from one set of vanes and the horizontal surface of the vertically movable support to the other set of vanes and the inclined surface of the vertically movable support, whereby the lowermost record is'tlltd below the level ot the lowermost vane of the first set of vanes,

a horizontally oscillatable arm mounted outwarrily the periphery of the turntable and l movable between the tilted lowermost record and the remaining records to supportingly .enga e said remaining records marginally supported by said second set of vanes from beneath at a zone adjacent said vertically movable support, and

means for lowering the vertically movable support to permit the lowermost record marginally supported thereon to drop by gravity towards.

the turntable. I

5. Mechanism for supporting and delivering disc records of different diameters in succession to the turntable of a phonograph comprising two laterally spaced sets of vanes oscillatably mounted outward of the periphery of the turntable for engaging the records in alternation, the vanes of each set being vertically spaced for extending beneath and supporting a plurality of records at their marginal zones. a vertically movable support located outwardly of the periphery of the turntable opposite said sets of vanes and having horizontal and inclined surfaces for supporting at the diametrically opposite marginal zone of the lowermost record all the records supported by one or the other of the sets of vanes at a horizontal or inclined plane, means for alternately oscillating said two sets of vanes into and out of record-supporting position to transfer the support of the records from one set of vanes and the horizontal surface of the vertically movable support to the other set of vanes and the inclined surface of the vertically movable support,

whereby the lowermost record is tilted below the the'level of the lowermost, vane of the first set 0f vanes.

7; Mechanism for supporting and delivering, disc records of differentdiameters in succession to the turntable of a phonograph comprising two laterally spaced sets of vanes oscillatably mounted outward of the periphery of the turntable for engaging the, records in alternation, the vanes of each set being vertically spaced for extending beneath and supporting a plurality ofrecords at their marginal zones, a vertically movable support located outwardly of the periphery of the turntable opposite said sets ofvanes and having horizontal and inclined surfaces for supporting at thediametrically opposite marginal zone of the lowermost record all the records sup ported by one or the other of the 'sets of vanes at a horizontal or inclined plane, the

sets of vanes, on the one hand,'and the horizontal and inclined surfaces of the vertically movjable support, on the other, being so located that the records at any one time are supported by the most distant of any two thereof, means for alternately oscillating said two sets of vanes into andoutof record-supporting position to transfer the support of the records from one set of vanes and the horizontal surface of the vertically movable support to the other set of vanes and the inclined surface of the vertically movable support, whereby the lowermost record is .tilted below the level of the lowermost vane of the first set of vanes. I

8. Mechanism for supporting and releasing disc records in succession to the turntable of a supported thereon to drop by gravity towards the turntable, and means for sequentially reversing the movement of, respectively, the vertically movable-support, the horizontally movable arm,

the oscillated and non-oscillated set of vanes, to

their original positions forcompleting the recordsupporting and delivering cycle. 1

6. Mechanism for supporting and delivering disc records of different diameters in succession to the turntable of a phonograph comprising two laterally spaced sets of vanes oscillatably mounted outward of the periphery of the turntable for engaging the records in alternation, the vanes of each set being vertically spaced for extending beneath and supporting a plurality of records at their marginal zones, a vertically movable I support locatedoutwardly of the periphery of the turntable opposite said sets of vanes and having horizontal and inclined surfaces for supporting at the diametrically opposite marginal zone of the lowermost record all the records supported byone or the other of the sets of vanes at a horizontal or inclined plane, the respective vanes V and the horizontal and inclined surfaces of the vertically movable support being so located that the sets of vanes in their alternating engage- I ment with the records cooperate with the respec tive surfaces of the vertically movable support ries of correspondingly functioning vertically diagonally opposite therefrom, means for alternately oscillating said two sets of vanes into and out of record-supporting position to transfer the support of the records. from one set ofvanes and the horizontal surface of the vertically movable support to the other set of vanes and the inclined surface of the vertically movable support,

whereby the lowermost record is tilted below phonograph comprising two sets of elements: one set including a first series of verticaIIyspaced vanes for individually supporting a plurality of records at their marginal zones and a second series of correspondingly functioning vertically spaced vanesmounted non-radially of the trimtable from said first series, means movably mounting said two series of vanes for alternating supporting engagement with the records, said second set including 'a vertically movable elevator for supporting the stack of records in association with either set of vanes at-thesubstantially radiallyopposite marginal zone of the lowermost record, one said set of elements having upper and lower surfaces spaced non-radially of the records, whereby the marginal edges of the records, when supported onsaid lower surface of said one set of elements. will be below the planes of the correspondingly spaced vanes of 1 the second series to thereby cause the records to be lowered by one positionwhen the second 'se ries of vanes is moved into engagement with the records and the lowermost record to be released from engagement with the lowermost vane of the first series. I

9. Mechanism for supporting and releasing disc records. in succession'to the turntable of a phonograph comprising two sets of elements; one set including a first series of vertically spaced vanes for individually'supporting a plurality of records at their marginal zones and a second sespaced vanes mounted non-radially of the turn,

table from .said first series, means movably mounting said two series of vanes for alternating 'suportingengagement with the records,- said see and set including a verticallymovable elevator for supporting, the stack of records at the substantially-radially op'poslte'marginal zone of the lowermost record in alternation with said first and second series of vanes, and a horizontally movable osoillatably mounted arm forsupporting-saidstack of records in association. with.

either set or vanes, but in alternation with said elevator, one said set of elements having upper T and lower surfaces spaoed non-radially oi the records whereby the marginal edaes o! the records, when supported onthe lower surface oi said one set of elements, bebelow the planes of the correspondingly spaced vanes of the second 

